Automatic take-up for drive-chains.



H. S. PlERCE. AUTOMATIC TAKE-UP FOR DRIVE CHAINS'M APPLICATION FILED FEB. (6. 191- Pmmd June 20, 1916.

me. @121 is ex .A M e EAHOILD 5%. PEEHCE, U13 IPHXLADELPHIA. PENNSYLVAEIA, ASSIGNO13TO LINK-BELT GGME'ANI, 0E FHILAZL'ELPI-HA, 'EEIQ'JHSYLVANZA, A COBPORATEDN' 0F ILLINGIS.

Epecifieation m2 matters ieetenh l me... m February 1e, fie'rial m. verse.

To aZZ whom it may comes n:

Be it knewn that, I. HAROLD S. Pawnee, e, cii izen oi the United {Mates residing in Philadelphia; Pennsylvania, have inventecl certain Improvements in Automatic Take Ups for Drive-Chains 0f which i-he foflow ing is speeifice-tien.

The object 01 my invention is be @rovide automatic means for talking up the slack due to the wear of the joints of e, c'irive chain.

The invention is particularly eoiapte. fer use in places which are not readily eccessi ble and especially in. the driving mechanism of an automobiie.

In the accompanying drawing:--Figure l, is a sectional view of my improvmi emfi-o matic'take-up for (hive chains. Fig. 2, is en emi View; Fig. 3,515 an perspective View 0:? the eccentric carrier for the when whee Fig. 4-, is a diagram showing the arrangement of the tekeup wheel in respect fie the driving end driven elements. Refei'ring in the first, instance teehe iev gram, Fig. 4e, 1 is the week shaft of an m;- tomobile. 2 is the cam shaft. 3 the pump or magneto shaft and. 4: is the .keup Wheel. 0n the shafts 1, 2 e116. are sprocket wheds 5, 6 ami 7 respeeeiveiy, and; a chain 8 peees around the seversel sprocket Wheels and the take up sprocket Wheel 4%. The object of this take-up is to ieke up the slack in the chain automatically as the Wear The makeup sprocket; wheel 4: is mounted. on e spindiefi projecting Efrem a carrier 10. 'fifis carrier 1s mounted in bearing 11 in 'she frame 12. The spiridle is leceted eocen triceliy in. respect to the center iine 0f the earner so that, on. the rotetlen of the em rxer 111 one dlrectlon', the slack at the chem will be taken up and, on. the rotation ef "the carrier in the opposite direction, the sleek of the chain will be increased.

In the present insmnee, the cerriev e flange bearing against the casing 19 e116; twe bearing portions 145 and. 15 which fit snugfiy in the bearing 1 The carrier is Iceduced in iemcter between *these Wm perfsions 141 and 15 and the bearing is prefec ably recessed...

1.6 a coiled epring hevfizg one'end; 1.? eepfieii exec ass in the red the ed for use in the chain drives ef'eutemobfle engines it will be understeefi 'het it can be applieci to seller mechanisms Without departing frem the essential features ofthe invention.

1. The combinaiiieze inen automatic take up dgiive chains, 02? a. sprecke'tl wheel around wmch the eham passes; a, carrier having" a spmcile located eecentmcelly In reepect tn the eenizee line of the carrier and;

fie sup eeri. the spreekei; Wheel; e bearing; fee. the carrier; em e spring having one end comma-ices? is the 5 12.1 23 and so :z-mung'efii than; when .121 whee is located in emf-ace Wiffe irive chain it will euiome iicelly eel-x1e up the Slack therein.

55. The eomhinmbien 0'5 2 seizes 01 spl'oekeii Wheel e; e chem immune. eprocl ket wheels; :1. carrier; an .eccentrieally iocefied pin en the carrier on which 011e, of said spreckee e-ale ie mounefl, eedy of the carrier 111g eyfiecirieei; bearing in which the cyiii'aricai. bee is melmtefi; and e soiled. spring surrexmdimg the cylinrieel body ami ate-Mixed at ene end to carrier am? at the ether end so the bearing.

3. The cembinetion of a series cf sprocket Wheels; e, chain passing around. said Wheels; carrier halving: an eccentric spindle'pre jecting the? em and on which one of the sproekebvmeels is loosely mounfied, the said carrier having "we cylindrical members 

